/*============================================================================= | |
Copyright (c) 2001-2007 Joel de Guzman | |
Distributed under the Boost Software License, Version 1.0. (See accompanying | |
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
==============================================================================*/ | |
#ifndef PHOENIX_OPERATOR_DETAIL_IO_HPP | |
#define PHOENIX_OPERATOR_DETAIL_IO_HPP | |
#include <boost/spirit/home/phoenix/operator/bitwise.hpp> | |
#include <boost/spirit/home/phoenix/core/reference.hpp> | |
#include <boost/utility/addressof.hpp> | |
#include <boost/utility/enable_if.hpp> | |
#include <iostream> | |
namespace boost { namespace phoenix { namespace detail | |
{ | |
typedef char(&no)[1]; | |
typedef char(&yes)[2]; | |
template <typename CharType, typename CharTrait> | |
yes ostream_test(std::basic_ostream<CharType, CharTrait>*); | |
no ostream_test(...); | |
template <typename CharType, typename CharTrait> | |
yes istream_test(std::basic_istream<CharType, CharTrait>*); | |
no istream_test(...); | |
template <typename T> | |
struct is_ostream | |
{ | |
static T x; | |
BOOST_STATIC_CONSTANT(bool, | |
value = sizeof(detail::ostream_test(boost::addressof(x))) == sizeof(yes)); | |
}; | |
template <typename T> | |
struct is_istream | |
{ | |
static T x; | |
BOOST_STATIC_CONSTANT(bool, | |
value = sizeof(detail::istream_test(boost::addressof(x))) == sizeof(yes)); | |
}; | |
template <typename T0, typename T1> | |
struct enable_if_ostream : | |
enable_if< | |
detail::is_ostream<T0> | |
, actor< | |
typename as_composite< | |
shift_left_eval | |
, actor<reference<T0> > | |
, actor<T1> | |
>::type | |
> | |
> | |
{}; | |
template <typename T0, typename T1> | |
struct enable_if_istream : | |
enable_if< | |
detail::is_istream<T0> | |
, actor< | |
typename as_composite< | |
shift_right_eval | |
, actor<reference<T0> > | |
, actor<T1> | |
>::type | |
> | |
> | |
{}; | |
typedef std::ios_base& (*iomanip_type)(std::ios_base&); | |
typedef std::istream& (*imanip_type)(std::istream&); | |
typedef std::ostream& (*omanip_type)(std::ostream&); | |
}}} | |
#endif |